JP2001288919A - Vehicle confining device in unattended parking area - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confine torque added to a shaft when load is added to a flap plate from above erected upward at a slant smaller than 90 deg. from a recumbent position in a vehicle confining device of an unattended parking area. SOLUTION: The basic end of a lever 10 mounting a roller 12 as a cam follower to the front end thereof is mounted to the shaft 3 having the basic end of the flap plate 5. A cam 25 having a cam face gradually rising in the retracted direction of a cylinder rod 21 is mounted to the front end of the cylinder rod 21 forward and backward driven along the direction at right angles to the shaft 3 by the air cylinder 20 so as to make the roller 12 follow upward, and a cam face area of the cam face occupied by the roller 12 at an erecting position is so formed in a slope or a horizontal plane that the component of force added to the cam 25 in the retracted direction makes the cylinder rod 21 smaller to an extent incapable of being substantially retracted when a vehicle runs on to the flap plate 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flap plate which is driven from a cylinder by 90 degrees from a prone position during parking.
The present invention relates to a vehicle restraining device for an unmanned parking lot, which is turned to an obliquely upward standing position smaller than 0 °.

[0002]

2. Description of the Related Art When erecting a flap plate of this kind,
Normally, the shaft is driven to rotate by connecting the tip of a cylinder rod of an air cylinder to a lever fixed to the end of the shaft attached to the base end.

[0003]

However, if the vehicle intentionally tries to get over the vehicle with the flap plate standing up, there is a problem that the cylinder rod moves backward due to the load applied via the shaft and the flap plate descends. Also,
At this time, the air circuit components may be damaged by excessive pressure generated in the cylinder chamber.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a vehicle restraint system for an unmanned parking lot capable of restraining a rotational force applied to a shaft when a load is applied to an upright flap plate from above. And

[0005]

According to the present invention, in order to attain this object, according to the present invention, the flap plate is turned by a cylinder to an obliquely upward standing position smaller than 90 ° from the prone position. In a vehicle restraint system for an unmanned parking lot, the base end of a lever provided with a cam follower at the front end is attached to a shaft to which the base end of a flap plate is attached, and the cylinder is orthogonally mounted on the shaft by a cylinder. A cam having a cam surface that gradually rises in the retreating direction of the cylinder rod is attached to the tip of the cylinder rod that is driven forward and backward so as to follow the cam follower upward, and the cam surface occupied by the cam follower in the upright position In the cam surface area, when the vehicle rides on the flap plate, the component force in the retreating direction applied to the cam cannot substantially retreat the cylinder rod. Characterized in that it is formed as an inclined plane or horizontal plane to reduce the time.

When the vehicle rides on the flap plate in the upright position, the cam tries to apply a driving force to retreat the cylinder rod via the shaft, lever, and cam follower. At this time, the cam surface area occupied by the cam follower has a small inclination angle or horizontal enough to substantially eliminate the component force in the retreating direction, and the retraction of the cylinder rod is suppressed. When horizontal, the cylinder rod drives the cam further forward after the upright position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle restraint system for an unmanned parking lot according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 3, the vehicle restraining device is configured such that a flap plate 5 having a base end attached to a shaft 3 provided on the base 1 is moved from a prone position shown in the figure by a drive mechanism stored in a control box 2. It is driven to an obliquely upward standing position smaller than 90 °.

As shown in FIG. 1, the drive mechanism includes a lever 10 having a base end attached to one end of a shaft 3 rotatably supported on both sides by a bearing 11, and a shaft orthogonal to the shaft 3. An air cylinder 20 for driving the cylinder rod 21 forward and backward along the base surface 1a along the parking surface in the direction, and a guide rail 2 attached to the distal end of the cylinder rod 21
6, a cam 25, etc., which is driven by a roller 12 as a cam follower rotatably supported by a support shaft 13 which is slid by being guided by the lever 6 and which is laterally protruded from the tip of the lever 10. Further, a stopper 15 is provided at one end of the shaft 3 so as to protrude from the base surface 1a to restrict the rotation of the shaft 3 in the rising direction.

The cam 25 has a cam surface region 25a gradually rising in the retreating direction of the cylinder rod 21 and a cam surface region formed in the retreating direction with a relatively gentle inclination from the region immediately before the standing position. 25b. The inclination angle of the cam surface region 25b is such that when the vehicle rides on the flap plate 5, the component force in the retreating direction of the rotational load applied from the roller 12 to the cam surface region 25b via the shaft 3 substantially acts on the cylinder rod 21. It is set gently so that it is so small that it cannot be retracted.

Referring to FIG. 2, the operation of the thus constructed vehicle restraining device will be described with reference to FIG. In the normal state, the roller 12 is in the cam surface area 25a.
, And the flap plate 5 is in the prone position (FIG. A). When it is detected that the vehicle has entered above the flap plate 5, the cylinder rod 21 moves forward and drives the cam 25 forward. As a result, the roller 12 follows the cam surface region 25a having a relatively steep inclination and rises rapidly to rotate the flap plate 5 upward. The width of the cam 25 in the front-rear direction can be reduced by such a steep cam surface region 25a.

The roller 12 follows the gently inclined cam surface area 25b near the normal upright position, gradually retracts and rises slightly to rotate the flap plate 5 to the normal upright position. Figure B). When the vehicle rides in the forward direction from the parking place with the flap plate 5 standing up in this manner, a downward rotating load is applied to the lever 10 via the shaft 3. At this time, the component force in the retreating direction becomes small due to the cam region 25b having a gentle inclination close to the horizontal, the retreat load is prevented from being applied to the cylinder rod 21, and the flap plate 5 is held at the standing position. On the other hand, the rotation of the flap plate 5 in the 90 ° direction is restricted by the stopper 15.

As another embodiment, the cam surface may be raised for turning the cam surface region 25a to the upright position and the cam surface region 25b may be horizontal for the stopper. In this case, when the roller 12 reaches the upper end of the rotation cam surface area, the flap plate 5 rotates to the normal standing position, and furthermore, the cylinder rod 21 slightly advances, so that the roller 12 moves upward after the horizontal movement. Occupy the stopper cam surface area. Also, the cam surface is not formed in two stages of the rotating cam surface region and the stopper cam surface region, but is formed into a curved surface shape that gradually becomes gentle from the cam surface region occupied by the cam follower in the prone position to the cam surface region occupied by the cam follower in the standing position. It is also conceivable to form.

The present invention is not limited to an air cylinder but can be applied to a hydraulic cylinder. Further, by increasing the height and width of the flap plate, the present invention can be implemented as a vehicle restraining device for a front bumper or a rear bumper disposed outside in the traveling direction of the vehicle.

[0014]

According to the present invention, when the flap plate is driven by the cylinder, even if the vehicle rides on the flap plate, the cylinder rod does not follow and recede, and the descent of the flap plate is restrained. In this state, it is difficult for the vehicle to escape illegally, and damage to attached parts is also avoided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a vehicle restraint system for an unmanned parking lot according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating the operation of the vehicle restraining device.

FIG. 3 is a perspective view of the vehicle restraining device in a prone state.

[Explanation of symbols]

 3 Shaft 5 Flap plate 10 Lever 12 Roller 20 Air cylinder 21 Cylinder rod 25 Cam 25a, 25b Cam surface area

Claims (4)

[Claims] 1. A vehicle restraint system for an unmanned parking lot, wherein a flap plate is rotated from a prone position to an upright position diagonally upward of less than 90 ° by being driven by a cylinder. Attach the base end of a lever provided with a cam follower to the shaft to which the cam follower is attached, and follow the cam follower upward to the tip of a cylinder rod driven forward and backward along a direction orthogonal to the shaft by a cylinder. A cam having a cam surface which gradually rises in the retreating direction of the cylinder rod is attached to the cam follower, and a cam surface area of the cam surface occupied by the cam follower in the upright position is the cam surface when the vehicle rides on the flap plate. The inclined surface or the raised horizontal surface is so small that the component force in the retreating direction applied to the cylinder rod cannot substantially retreat the cylinder rod. Unmanned parking of a vehicle restraint system, characterized in that it is formed in. 2. A cam surface region in which a cam surface is driven by a cam follower from a prone position, and a cam surface region in which the inclination is continuously reduced in the cam surface region in a retreating direction relative to the cam surface region. The vehicle restraining device for an unmanned parking lot according to claim 1, comprising: 3. The cam surface according to claim 1, wherein the cam surface has a cam surface region for driving the cam follower from the prone position, and a horizontal cam surface region continuous with the cam surface region in the retreating direction. Vehicle restraint system for unmanned parking. 4. The cam surface according to claim 1, wherein the cam surface is formed in a curved shape in which the inclination is gradually reduced from a cam surface area occupied by the cam follower in the prone position to a cam surface area occupied by the upright position. Vehicle restraint system in unmanned parking lot.